﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace cadbom
{
        /// <summary>
        /// 自动超时消息提示框
        /// </summary>
    public class MessageBoxTimeOut
    {
        /// <summary>
        /// 标题
        /// </summary>
        private static string _caption;

        /// <summary>
        /// 显示消息框
        /// </summary>
        /// <param name="text">消息内容</param>
        /// <param name="caption">标题</param>
        /// <param name="timeout">超时时间，单位：毫秒</param>
        public static void Show(string text, string caption, int timeout)
        {
            _caption = caption;
            StartTimer(timeout);
            MessageBox.Show(text, caption);
        }
        /// <summary>
        /// 显示消息框
        /// </summary>
        /// <param name="text">消息内容</param>
        /// <param name="caption">标题</param>
        /// <param name="timeout">超时时间，单位：毫秒</param>
        /// <param name="buttons">消息框上的按钮</param>
        public static void Show(string text, string caption, int timeout, MessageBoxButtons buttons)
        {
            _caption = caption;
            StartTimer(timeout);
            MessageBox.Show(text, caption, buttons);
        }
        /// <summary>
        /// 显示消息框
        /// </summary>
        /// <param name="text">消息内容</param>
        /// <param name="caption">标题</param>
        /// <param name="timeout">超时时间，单位：毫秒</param>
        /// <param name="buttons">消息框上的按钮</param>
        /// <param name="icon">消息框上的图标</param>
        public static void Show(string text, string caption, int timeout, MessageBoxButtons buttons, MessageBoxIcon icon)
        {
            _caption = caption;
            StartTimer(timeout);
            MessageBox.Show(text, caption, buttons, icon);
        }
        /// <summary>
        /// 显示消息框
        /// </summary>
        /// <param name="owner">消息框所有者</param>
        /// <param name="text">消息内容</param>
        /// <param name="caption">标题</param>
        /// <param name="timeout">超时时间，单位：毫秒</param>
        public static void Show(IWin32Window owner, string text, string caption, int timeout)
        {
            _caption = caption;
            StartTimer(timeout);
            MessageBox.Show(owner, text, caption);
        }
        /// <summary>
        /// 显示消息框
        /// </summary>
        /// <param name="owner">消息框所有者</param>
        /// <param name="text">消息内容</param>
        /// <param name="caption">标题</param>
        /// <param name="timeout">超时时间，单位：毫秒</param>
        /// <param name="buttons">消息框上的按钮</param>
        public static void Show(IWin32Window owner, string text, string caption, int timeout, MessageBoxButtons buttons)
        {
            _caption = caption;
            StartTimer(timeout);
            MessageBox.Show(owner, text, caption, buttons);
        }
        /// <summary>
        /// 显示消息框
        /// </summary>
        /// <param name="owner">消息框所有者</param>
        /// <param name="text">消息内容</param>
        /// <param name="caption">标题</param>
        /// <param name="timeout">超时时间，单位：毫秒</param>
        /// <param name="buttons">消息框上的按钮</param>
        /// <param name="icon">消息框上的图标</param>
        public static void Show(IWin32Window owner, string text, string caption, int timeout, MessageBoxButtons buttons, MessageBoxIcon icon)
        {
            _caption = caption;
            StartTimer(timeout);
            MessageBox.Show(owner, text, caption, buttons, icon);
        }

        private static void StartTimer(int interval)
        {
            Timer timer = new Timer();
            timer.Interval = interval;
            timer.Tick += new EventHandler(Timer_Tick);
            timer.Enabled = true;
        }

        private static void Timer_Tick(object sender, EventArgs e)
        {
            KillMessageBox();
            //停止计时器
            ((Timer)sender).Enabled = false;
        }

        [DllImport("user32.dll", EntryPoint = "FindWindow", CharSet = CharSet.Auto)]
        private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        private extern static int PostMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);

        private const int WM_CLOSE = 0x10;

        private static void KillMessageBox()
        {
            //查找MessageBox的弹出窗口,注意对应标题
            IntPtr ptr = FindWindow(null, _caption);
            if (ptr != IntPtr.Zero)
            {
                //查找到窗口则关闭
                PostMessage(ptr, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
            }
        }
    }
    
}
